Quantitative Strain Imaging Using Fiber Grating Sensors for Composite Rocket Parts

Multi-axis fiber grating strain sensors may be used to localize and qualitatively identify the degree of damage in composite parts. Signatures associated with delaminations and damage tow material are significantly different for strain imaging produced data. This Phase I project is directed toward improving the quantitative measurement capability of "strain imaging" methods through experiments, improved analytical tools, and destructive testing of the Phase I demonstration article. These procedures and tests will allow first-time quantitative verification of "strain imaging" signatures.